Recent activity by MammieArmyta

1 answer 25 views

How does the size and shape of a nanomaterial affect its electronic and optical properties, and what is the mechanism behind these changes?

answered Feb 24 in Quantum Chemistry

1 answer 29 views

What is the reaction mechanism for the substitution of bromine with hydroxide ion in an acidic medium and what is the role of the intermediate formed in this reaction?

answered Feb 24 in Organic Chemistry

1 answer 37 views

What is the appropriate reaction conditions (such as temperature, pressure and catalyst) required for the successful preparation of 2-chloro-4-nitroaniline from aniline and chlorine gas through the process of Chemical synthesis?

asked Feb 22 in Chemical synthesis

1 answer 32 views

What is the optimal reaction condition for the preparation of p-nitroaniline from aniline and nitric acid, and how can the yield of the product be improved?

answered Feb 21 in Chemical synthesis

1 answer 32 views

What is the effect of processing conditions on the mechanical properties of polymer products?

answered Feb 20 in Polymer Chemistry

1 answer 34 views

How does the intensity of light affect the rate of a photochemical reaction and what factors should be considered when designing an experiment to measure this relationship?

asked Feb 20 in Physical Chemistry

1 answer 29 views

How does the electronic configuration and size of lanthanides and actinides affect their coordination chemistry behavior? Provide specific examples to illustrate your answer.

asked Feb 20 in Coordination Chemistry

1 answer 32 views

What is the difference between geometric and structural isomerism in organic compounds, and how can you distinguish between the two types of isomers using physical and chemical properties?

asked Feb 19 in Organic Chemistry

1 answer 41 views

How does the concentration of Chlorofluorocarbons (CFCs) in the atmosphere correlate with the size of the ozone hole and what are the possible effects on the environment and human health?

asked Feb 18 in Environmental Chemistry

1 answer 36 views

How does the concentration of a reactant affect the rate of reaction and the resulting yield in a chemical reaction involving hydrogen peroxide and potassium iodide?

asked Feb 18 in Chemical kinetics

1 answer 38 views

How does the calculation of electronic excited states and optical properties using quantum chemistry methods aid in the development of new materials with enhanced optical properties, such as organic light-emitting diodes (OLEDs)?

asked Feb 18 in Quantum Chemistry

1 answer 40 views

How can we predict the electronic and magnetic properties of specific metal-organic frameworks and their potential applications in catalysis, energy storage, and gas separation?

answered Feb 14 in Quantum Chemistry

1 answer 37 views

How can we predict the absorption spectra of a molecule using quantum chemical calculations of excited states?

answered Feb 14 in Computational Chemistry

1 answer 36 views

How do POPs affect the food web and what are the potential risks of consuming contaminated organisms?

answered Feb 14 in Environmental Chemistry

1 answer 38 views

How does decreasing the concentration of a reactant affect the equilibrium position of a chemical reaction? Provide a specific example of a reaction and explain how the Le Châtelier's principle applies in this situation.

answered Feb 12 in Chemical equilibrium

1 answer 49 views

How does the coordination chemistry of metalloenzymes and metalloproteins facilitate their catalytic activity and what factors impact their ability to bind and activate substrates?

answered Feb 12 in Coordination Chemistry

1 answer 100 views

How can the study of chemistry help in solving real-world problems related to sustainability and economic development?

answered Feb 11 in Chemical education

1 answer 41 views

How can the conductivity of polymer electrolytes be enhanced to improve the performance and efficiency of batteries?

answered Feb 6 in Polymer Chemistry

1 answer 65 views

Calculate the standard enthalpy change for the sublimation of iodine, given that the sublimation of 1 mole of iodine requires 62.44 kJ of energy and the standard enthalpy of formation of iodine (s) is 0 kJ/mol.

asked Feb 3 in Chemical thermodynamics

1 answer 73 views

Calculate the standard enthalpy change for the reaction where 3 moles of hydrogen gas react with 1 mole of nitrogen gas to form 2 moles of ammonia gas. Given the following thermochemical equation: N2(g) + 3 H2(g) → 2 NH3(g) ΔH° = −92.4 kJ/mol

answered Feb 3 in Chemical thermodynamics

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